Year	% of GDP
1996	14.893988160308634
1997	16.65878503578998
1998	13.484543206388746
2008	18.071220233623585
2009	17.825733019580053
2010	17.773855374558806
2011	17.774852061654435
2012	16.920535026102776
2013	17.425453360907593
2014	17.02247109074058
2015	16.966153479706158
2016	16.935248136337723
2017	16.550432077864368
2018	16.638166128873504
2019	16.067034846673845
2020	16.33222108419635
2021	16.56148758137241
2022	16.385386277382956